Multiple attachments and Upload Errors

Hi,

my users sometimes report an error when uploading multiple attachments,
using 3.4.2-4 (debianized), any hints ? cannot tell how often this happens
because the error does not show up in syslog.

error: read-open /tmp/MhIKX63Nwt: No such file or directory
at /usr/share/perl5/MIME/Body.pm line 417, line 212

context: …
413: if ($mode eq ‘w’) { ### writing
414: $IO = FileHandle->new(">$path") || die “write-open $path: $!”;
415: }
416: elsif ($mode eq ‘r’) { ### reading
417: $IO = FileHandle->new("<$path") || die “read-open $path: $!”;
418: }
419: else {
420: die “bad mode: ‘$mode’”;
421: }

code stack: /usr/share/perl5/MIME/Body.pm:417
/usr/share/perl5/MIME/Body.pm:317
/usr/share/perl5/MIME/Body.pm:217
/usr/share/request-tracker3.4/lib/RT/Attachment_Overlay.pm:205
/usr/share/request-tracker3.4/lib/RT/Attachment_Overlay.pm:191
/usr/share/request-tracker3.4/lib/RT/Attachment_Overlay.pm:191
/usr/share/request-tracker3.4/lib/RT/Transaction_Overlay.pm:472
/usr/share/request-tracker3.4/lib/RT/Transaction_Overlay.pm:150
/usr/share/request-tracker3.4/lib/RT/Record.pm:1421
/usr/share/request-tracker3.4/lib/RT/Ticket_Overlay.pm:2373
/usr/share/request-tracker3.4/lib/RT/Ticket_Overlay.pm:2259
/usr/share/request-tracker3.4/lib/RT/Interface/Web.pm:482
/usr/local/share/request-tracker3.4/html/mySoIS/Display.html:184
/usr/local/share/request-tracker3.4/html/mySoIS/Update.html:271
/usr/share/request-tracker3.4/html/autohandler:215
regards
Georg Glas